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a sample of a compound is found to contain 1011 g of chromium and 0467 g of oxygen what is the empirical formula for
an extreme skier starting from rest coasts down a mountainthat makes an angle 250deg with the horizontal the
a solution containing 2705 mg of an unknown protein per 220 ml solution was found to have an osmotic pressure of 310
a child complains that her 160 g of milk is too hot at 90 degree c she then pour 80 g of cold milk at 7 degree c in it
a moving particle encounters an external electric field that decreases its kinetic energy from 9520 ev to 7060 ev as
a baseball is thrown horizontally from from a height of 4410 mabove ground with a speed of 335 ms where is the
a speedboat starts from rest and accelerates at 215ms2 for 835 s at the end of this time the boatcontinues for an
an alpha particle charge 20e is sent at high speed toward a gold nucleus charge 79enbsp what is the elctrical force
does the equation of motion v2-u22as come from the equation vf2vi2-2gdeltay if so where is the minus that isleft once
an electric field of magnitude 2210 nc is applied along the xaxis calculate the electric flux through a rectangular
a certain person in a typical conversation speaks at a soundlevel of 63 db the music at a certain rock concert reaches
two resistors connected in series with each other and a 10 vbattery are connected in a loop the voltage drop across the
the stretched length of a spring is 428 m a ribbon is tied aroundthe spring at a point near its center a pulse created
a spring is stretched between two posts when a pulse is produced at one end of the spring it makes 4 back-and-forth
a flower pot falls from the ledge of a buildingnbsp a person in an apartment below coincidentally holding a stopwatch
a diver springs upward with an initial speed of 17 ms from a 30-mboarda find the velocity with which he strikes
pilot wants to fly an airplane due north but theres a 65kmhwind blowing towrd teh east a in what direction should the
a 003 kg lead bullet hitsa steel plate and melts and splatters on impact assuming that the bullet recieves 80 of the
the weight of the atmosphere above 1 m2 of earths surface is about 100000 n density of course become less with altitude
a wooden block with equal sides of 4 cm is floating in water if the density of the block is half the density of water
the weight of a block of metal is measured with a scale first in air then in water find the specific gravity of the
a charge of 219 microc is held fixed at the origin a second charge of 219 microc is released from rest at the position
what is the electric potential energy of three equal positive charges of 105 microc when they are arranged to form a
a 003 kg lead bullet hits a steel plate and melts and splatters on impact assuming that the bullet recieves 80 of the
a baseball is seen to pass upward by a window 23 m above the street with a vertical speed of14 ms the ball was thrown